HDF Subfloor Underlayment Sheet from Canada
High-density fiberboard sheets for subfloor underlayment in construction, >0.8 g/cm³ density, oil-treated surface only for water resistance. Stabilizes flooring installations. Classified 4411.92.20.00 as other untreated HDF.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• Include screw-holding strength test data for construction compliance
• Ensure no wax/paraffin additives beyond 3% binder limit per notes